![That's a diagonal fisheye, not a circular fisheye.: Micro Four Thirds Talk Forum: Digital Photography Review That's a diagonal fisheye, not a circular fisheye.: Micro Four Thirds Talk Forum: Digital Photography Review](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Imagine_being_a_fly_VLT.jpg/752px-Imagine_being_a_fly_VLT.jpg)
That's a diagonal fisheye, not a circular fisheye.: Micro Four Thirds Talk Forum: Digital Photography Review
![Sigma Photo 10mm f/2.8 Fisheye Lens (Canon mount) High angle-of-view diagonal fisheye lens for APS-C cameras at Crutchfield Sigma Photo 10mm f/2.8 Fisheye Lens (Canon mount) High angle-of-view diagonal fisheye lens for APS-C cameras at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2013/8/366/g366477CA-F.jpg)
Sigma Photo 10mm f/2.8 Fisheye Lens (Canon mount) High angle-of-view diagonal fisheye lens for APS-C cameras at Crutchfield
![Amazon.com : Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Canon SLR Cameras : Camera Lenses : Electronics Amazon.com : Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Canon SLR Cameras : Camera Lenses : Electronics](https://m.media-amazon.com/images/I/81c5UXXbnbL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Canon SLR Cameras : Camera Lenses : Electronics
![Amazon.com : Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Nikon SLR Cameras : Camera Lenses : Electronics Amazon.com : Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Nikon SLR Cameras : Camera Lenses : Electronics](https://m.media-amazon.com/images/I/811rnTjvmlL._AC_UF894,1000_QL80_.jpg)